Kinetic studies of photosensitized oxygenation by singlet oxygen in aqueous micellar solutions.
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概要
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Singlet oxygen produced by the dye-sensitized reaction in an aqueous solution penetrates into the interior of the surfactant micelles of sodium dodecyl sulfate (SDS) and dodecyltrimethylammonium chloride (DTAC), reacting with the solubilized acceptors such as 9,10-dimethylanthracene, 2,5-diphenyloxazole, and 1,3-diphenylisobenzofuran. From the acceptor concentration effect on the photooxygenation quantum yield, the reactivity index (β), the ratio of the rate constant of the spontaneous decay of singlet oxygen to that of the reaction with an acceptor, is obtained in the aqueous micellar solution. It has been shown that the lifetime of singlet oxygen is mainly dependent on the solvent composition in the bulk phase from the kinetic analysis of the mixed solvent effect on the quantum yield in SDS and DTAC micellear solutions and that in a homogeneous solution.
- 公益社団法人 日本化学会の論文
著者
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Usui Yoshiharu
Department Of Achemistry Faculty Of Science Ibaraki University
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Nakamura Hiroko
Department Of Health Policy And Planning Graduate School Of International Health The University Of T
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USUI Yoshiharu
Department of Chemistry, Faculty of Science, Ibaraki University
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Tsukada Michio
Department of Chemistry, Faculty of Science, Ibaraki University
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